As I recall ...
the original judgement was very full, precise, and had no real room for any wriggling. As this appeal seems to show.
There were several interconnected checkboxes which made the drivers employees, not just a single rebuttable point of law.
One has to wonder whos paying the Association of Independent Professionals and the Self Employed (IPSE) expressed surprise at the ruling. for their opinion ???? And they might have looked a little less tittish if they had read the original ruling, rather than sounding off willy nilly, as they'd know the fact that an Uber driver cannot negotiate the fee for a job before acceptance moves them from being "self employed" to an employee. That was one aspect - there were a raft more.